Serialized Fields

fieldName

keepMode

KeepMode determines which document id to consider as the master, all others being
identified as duplicates. Selecting the "first occurrence" can potentially save on IO.

processingMode

int processingMode

"Full" processing mode starts by setting all bits to false and only setting bits
for documents that contain the given field and are identified as none-duplicates.
"Fast" processing sets all bits to true then unsets all duplicate docs found for the
given field. This approach avoids the need to read TermDocs for terms that are seen
to have a document frequency of exactly "1" (i.e. no duplicates). While a potentially
faster approach , the downside is that bitsets produced will include bits set for
documents that do not actually contain the field given.

Serialized Fields

fields

Expert: The values which are used to sort the referenced document.
The order of these will match the original sort criteria given by a
Sort object. Each Object will have been returned from
the value method corresponding
FieldComparator used to sort this field.